Investigation of Ti1−x(Zr,Ta,V,W)xB2 and Al3Ti1−x(Zr,V)x grain refiners in additively manufactured Al-2 wt%Cu alloys by a high throughput method

Leijon, Freddy; Johansson, Erik; Lu, Jun; Aling, Björn; Skjervold, S.R.; Moverare, Johan

doi:10.1016/j.matdes.2022.111093

Cited by 8 publications

(8 citation statements)

References 40 publications

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“…The method developed in [8,9] was used with a target setup to produce a bi-directional and partly perpendicular composition gradient, see Figure 1a,b. This method provides a good setup for studying large compositional ranges with high composition resolution.…”

Section: Methodsmentioning

confidence: 99%

“…A 600x230x10mm substrate was cut from the same 1050A sheet material as the targets and positioned in relation to the targets as in previous work [8,9]. Deposition was carried out in 435 mPa Ar atmosphere for 7h using a constant magnetron power of 5kW, while voltage and current fluctuated it was on average 400V and 12.5A.…”

Section: Methodsmentioning

confidence: 99%

“…To enable laser melting and SEM handling the substrate was first cut into 8 plates of size 110x110mm. The melt pattern, order and the laser parameters (340W, 1000mm/s and 100µm hatch spacing) were the same as in [9]. Those laser parame-3 of 12 ters were selected to match the estimated film thickness of ~180µm and before laser melting the plate was heated to 100°C.…”

Section: Methodsmentioning

confidence: 99%

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High Throughput Printability Screening of AlMgSi Alloys for Powder Bed Fusion

Leijon¹,

Skjervold²,

Moverare³

2023

Preprint

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The importance of both recycling and additive manufacturing (AM) is increasing, however there has been a limited focus on development of AM alloys that are recyclably compatible with the larger scrap loops of wrought 5xxx, 6xxx and cast 3xx aluminium alloys. In this work the powder bed fusion (PBF) printability of AlMgSi alloys in the interval of 0-30wt%Mg and 0-4wt%Si is screened experimentally with a high throughput method. This method produces PBF mimicked material by PVD co-sputtering followed by laser remelting. Strong evidence was found for AlMgSi alloys being printable in two different composition ranges; Si+Mg<0.7wt% or for Si+2/3Mg>4wt% when Mg < 3wt% and Si > 3wt%. Increasing the amount of Mg and Si influence the grain structure by introducing fine columnar grains at the melt pool boundary, although the melt pool interior was unaffected. Hardness in as-built state increased with both Mg and Si, alt-hough Si had neglectable effect at low levels of Mg. Both evaporative loss of Mg and the amount of Mg in solid solution increased linearly with the amount of Mg.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

High Throughput Printability Screening of AlMgSi Alloys for Powder Bed Fusion

Leijon¹,

Skjervold²,

Moverare³

2023

Preprint

View full text Add to dashboard Cite

show abstract

“…The method developed in [21,22] was used with a target setup, to produce bi-directional and partly perpendicular composition gradients (see Figure 1a-c). This method provides a good setup for studying large compositional ranges with a high composition resolution.…”

Section: Methodsmentioning

confidence: 99%

High-Throughput Printability Screening of AlMgSi Alloys for Powder Bed Fusion

Leijon

Moverare

2023

Metals

Self Cite

View full text Add to dashboard Cite

The importance of both recycling and additive manufacturing (AM) is increasing; however, there has been a limited focus on the development of AM alloys that are compatible in terms of recyclability with the larger scrap loops of wrought 5xxx, 6xxx and cast 3xx aluminium alloys. In this work, the powder bed fusion (PBF) printability of AlMgSi alloys in the interval of 0–30 wt% Mg and 0–4 wt% Si is screened experimentally with a high-throughput method. This method produces PBF-mimicked material by PVD co-sputtering, followed by laser remelting. Strong evidence was found for AlMgSi alloys being printable within two different composition ranges: Si + Mg < 0.7 wt% or for Si + 2/3 Mg > 4 wt% when Mg < 3 wt% and Si > 3 wt%. Increasing the amount of Mg and Si influences the grain structure by introducing fine columnar grains at the melt pool boundary, although the melt pool interior was unaffected. Hardness in an as-built state increased with both Mg and Si, although Si had a neglectable effect at low levels of Mg. Both the evaporative loss of Mg and the amount of Mg in solid solution increased linearly with the amount of Mg.

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“…Gonzalez et al [101] found that the successful CET in AA7075 alloys reinforced by TiC remarkably weakened the residual stress inside the LDED sample, as shown in figures 15(k) and (l). Moreover, some studies confirmed that Al composites reinforced by two or more hybrid ceramics seem more effective in improving formability and printability than a single reinforcement [185,186].…”

Section: Ex-situ Reinforcement Particlesmentioning

confidence: 96%

Review on laser directed energy deposited aluminum alloys

Liu,

Chen,

Qiu

et al. 2024

Int. J. Extrem. Manuf.

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The lightweight aluminum (Al) alloys have been widely used in frontier fields like aerospace and automotive industries, which attracts great interest in additive manufacturing to process high-value Al parts. As a mainstream additive manufacturing technique, laser directed energy deposition (LDED) shows good scalability to meet requirements for large-format components manufacturing and repairing. However, LDED Al alloys are highly challenging due to the inherent poor printability (e.g., low laser absorption, high oxidation sensitivity and cracking tendency). To further promote the development of LDED high-performance Al alloys, this review gains a deep understanding of the challenges and strategies to improve printability in LDED Al alloys. The porosity, cracking, distortion, inclusions, elements evaporation and resultant inferior mechanical properties (than laser powder bed fusion) are the key challenges in LDED Al alloys. Processing parameter optimizations, in-situ alloy design, reinforcing particle addition and field assistance are the efficient approaches to improve the printability and performance of LDED Al alloys. The underlying correlations between processes, alloy innovation, characteristic microstructures, and achievable performances in LDED Al alloys are discussed. The benchmarking mechanical properties and primary strengthening mechanism of LDED Al alloys are summarized. This review aims to provide a critical and in-depth evaluation of current progress in LDED Al alloys. The future opportunities and perspectives in LDED high-performance Al alloys are also outlooked.

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Investigation of Ti1−x(Zr,Ta,V,W)xB2 and Al3Ti1−x(Zr,V)x grain refiners in additively manufactured Al-2 wt%Cu alloys by a high throughput method

Cited by 8 publications

References 40 publications

High Throughput Printability Screening of AlMgSi Alloys for Powder Bed Fusion

High Throughput Printability Screening of AlMgSi Alloys for Powder Bed Fusion

High-Throughput Printability Screening of AlMgSi Alloys for Powder Bed Fusion

Review on laser directed energy deposited aluminum alloys

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